- Drugs with the potential to affect (either increasing or decreasing) endogenous insulin secretion or insulin sensitivity including corticosteroids (as detailed above), β-adrenergic blockers, beta-adrenergic agonists, quinine, thiazide or thiazide-like diuretics, calcineurin inhibitors, niacin, anti-psychotic or antidepressant drugs, somatostatin analogs, growth hormone, weight-reducing drugs (e.g. orlistat, phentermine and topiramate extended-release, lorcaserin). Stable doses of agents commonly required by subjects with T2DM including angiotensin converting enzyme inhibitors, angiotensin II receptor blockers, statins, fibrates, and aspirin (<100 mg daily) will be permitted at the discretion of the investigator.